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staurolite |
Also found in: Dictionary/thesaurus, Wikipedia, Hutchinson | 0.07 sec. |
stauroliteSilicate mineral produced by regional metamorphism in rocks such as mica schists, slates, and gneisses, where it is generally associated with other minerals. Staurolite is a brittle, hard mineral that has a dull lustre. Its crystals are usually dark brown and are often twinned in cruciform patterns (known as fairy crosses) that can be made into ornaments. Staurolite occurs especially in Canada, Brazil, France, Switzerland, and the U.S. (North Carolina, Virginia, and Georgia). How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| The metamorphosed alteration zones are characterized by the presence of various combinations of anthophyllite, cordierite, garnet, staurolite, biotite and/ or andalusite. The researchers identified a speck of the mineral staurolite in a South African diamond. The upper alteration zone, which is characterized by sericite with lesser biotite and staurolite, hosts the Morgan Lake, volcanogenic, massive sulphide deposit which contains approximately 200,000 tonnes grading 8. |
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